Door-operating system for one-man cars



i 5 1927 1 1623174 Aprl P. R. FORMAN 7 DOOR OPERATING SYSTEM FOR ONE-'MAN CARS Filed Jan. 9, 1926 2 Sheets-Sheet. l

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- P. R. FORMAN DOOR OPERATING SYSTEM FOR ONE-MAN CARS Filed Jan. 9, 1926 v 2 Sheets-Sheet 2 U l avwewto'c doors on the safe' s1 be opened by hand.

2 Patented Apr. 5., 1927.

mm B. FORMAN, oF'nA 'Iw AY,

NEW annsmz, AssIeNoR T NATIONAL PNEUMATIC COMPANY, on NEW Yonx,'.N. Y.,.-A conronA'rroN or WEST VIRGINIA.

DOOR-OPERATING SYSTEM non ONE-MAN cAns.

' 1 Application filed January The general object of this invention is the provision( of a safety valve and system for the control of the doors of the so-called one man cars.

Aspecific object has to do with the provision of a valve in which the handle can only be removed when in, one position at which time the air is being fed to all the door engines from the reservoir supply. l0

it is possible from one'end of the car, to

open'either the front orthe front and rear doors on one side .of the car in unison, or

to open all the doors of the car if desired.

It is alsopossible by the use of this valve toput the door engines either on the air reservoirpressure or on the emergency or brake line pressure, so that when the emergency brakes are ap 'lied the front" and rear e of the car are free to The valve is so constructed that it requires a conscious act of the motorman to so place the handle that the rear door opens as well as to so place the handle that it may beremoved. I A i These: and other objects,-which will appear as the description goes forward, are obtained by the use of my invention. 1

' The "invention is composed substantially of the construction, combination, arrangement, and relative location of parts as will be more fully hereinafter set forth. as one embodiment of .my inventivethought to which -I do not intend to be limited, but

rather to the spirit and'scope of myinventionas definedby the appended claims. Referring to the drawings:

Figure 1 is a diagrammatic plan view of car showing the valve, door engines, reservoir and piping,

Figure 2 is a plan view of the safety valve.

. Figure 3 is a front elevational view of the safety valve. Figure 4 is a plan view ofthe valve block taken on line '55 of Fig. 3, looking inthe direction of the arrows.

1 Figure 5 is a plan view of the face of the ,valve head. p Referring to Figure 1, 1 indicates. the car body in general, of which the rlght hand vI also provide a valve by means of which 9, 1926. Serial No. 80,228.

end will be considered the front. The safety valve is shown diagrammatically at 2, havmg the handle positions indicated by the letters A, B, G .and H. The forward right 5 hand door engine 3, the forward left hand door engine 4, the rear right hand door engine 5, and'the rear left hand door engine 6 are shown diagrammatically, and are the well known double piston type engine operated by compressed air. Of course, any suitable door engine may be used although such a device forms no part of this invention. The doors operated by this engine are not. '1 shown since it .is sufficient to say that they may be connected to the engines in any well known manner.

The air supply reservoir 7 is connected by pipe 8 to the threaded opening 9 in the valve block 41 (Figures 2 and 4), which opening -is-in connection withpassage 10, terminating in port 11 in the Valve seat 12.:- Another pipe line'13 connects the-reservoilf 7 with the other valve 2 at the rear end of the car in a port corresponding to port 9 (Figure 2). The valves and piping at each end of the car are duplicates of each'other: 14 is' an emergency valve forming part of the air brake system. J

A pipe line 15 leads directly from threaded opening 16 in the valve block 41 to the rear door valvepuller connected to the door engine 5. This opening 16 is connected by passages 17 and 18 to the ports 19 and 20 in the valve seat 12. The pipe 21 connects the line 15 with the forward door engine 3.

pipe line 22is connected with the threaded "opening 23 in the valve block 41 of forward? valve 2, and with the corresponding opening in the rear valve 2. The emergency valve 14 00 which is to be' connected to the air brake line is also connected to line 22 by means of pipe 24. The threaded opening 23 is connected with the port opening 26 byfipassage 25.

Still another pipeline 27-.leads from 95, threaded opening 28 to the valve puller 40 of the door engine 3, and is connected by the passage 29 to port opening30 which opens into a groove 31 in the valve seat 12. The threaded opening 32 receives the pipe line 33, which is attached at its other end to the valve puller 40 on door engine 5 at the rear head 55 held in 7 At the other end of the car, line 15 corresponds to line 15, line 21corresponds to line 21, line 27 corresponds to line 27, and line 23' corresponds to line 23.

The valve block 41 is supported by the U-shaped block 42 to which it is attached by bolts 43, and has the valve seat 12 on its lower face. On the upper end of the valve block 41 is fastened the .cap 44 by means of screws 45. In the' cap 44 is a slot 46 through 'which the handle 47 passes when in position A. This is the only position in which the handle can be put on the valve stem 48 or removed from it. A U-shaped arbor 49 is integral with-the cap serves as a-stop in removing or putting on the handle 47 to which is attached the integral collar 50 having a central D-shaped opening to receive the similarly shaped upper end of the valve-stem. In order to move the handle 47 to position H it is neces- 30 sary to slide it vertically on valve stem 48 over the projection 51 out of notch 52, thus requiring a conscious effort on the part of the motorman. Likewise to return the valve to position A it is necessary'to move the handle vertically from'notch 52 over, projection 53. V r

On the lower end of valve block 41 is fastened a cup shaped cap 54 by means: of bolts 55. Within the cap 541s the valve position by the spring pressed thimble 5 spring 57 is controlled by the bolt 58,

An irregular shaped depression 59 inthe valve head receives the stem 48, for rotation with it. The head also has on its 'surface the three curved grooves 60, 61 and 62, for a purpose which will be described later. In one'end of the ooves 61 and are holes and 71 going completely through the valve head 55. i

The operation of the valve and its connectedsystem will now be described. In this type of valve the handle can only be put on and taken off in one position of the 'valve stem which is indicated as position A in 'thedrawings. Thus when the motorman is at the front end of the car the valve at ,the rear will be inposition A. The motor- "man at the front puts the handle in place,

the valve being at these conditions the air travels from the reservoir in both directions throughpipes 8 and 13, through opening 9 and passage 10 to port opening 11 in the valve seat intofthe groove 60, and through port 70 into the 44, and

. The pressure on the off on the wrong position A also. Under valve head chamber formed by cap 54. The air pressure thus cooperates with the spring pressed thimble to force the valve head against its seat. The air also passes from groove 60 through port 19, passage 17, opening 16, and lines 15 and 21 to the door engines 3 and 5. Since the valve handle of.

valve 2 at the other end of the car is in position A fluid pressure is applied from the reservoir to the door, engines 4 and 6. The doors will then all be closed. The line 22 leading from the emergency valve is then blanked off. The reservoir is a standing supply and is not affected by brake applications. i 7

When the valve at the front end of the car is moved to position B, which is the normal closed position of the valve when the motorman is using that particular valve, reservoir line 8 is blanked off and line 15 is connected through the 18 and port 20 .and groove 61 with port26, passage 25, opening 23, and line22 to the emergency valve 14 of the emergency brake air line. At the same time lines 27 and 33 are exhausting through groove 62 andexhaust line 39. The door engiiles 3 and 5 will then be on the emergency line while the doors 4 and 6 will remain on the reservoir pressure. Thus the doors 3' and 5 are held closed by the emergency pressure'in the pipe line 15'. If the motorman should make an emergency application of the brakes, the air to the door engines 3and5 through the line 15, would be exhausted through the valve,

fleaving the doors 3 a1'1d 5 free to'be opened by hand, there being no pressure on them in view of the fact that the valve-at the other end ofthe car has been left in position A, so that the handle may be removed, and

thus doors 4 and 6 remain closed under the in-.

fluence of reservoir pressure acting on them. Therefore in case of an emergency application of the brakes, or the motorman dropping dead'or something of that nature, the propulsion and brakes'are controlled at the drop dead device of the motor controller, and the door engines are automatically freed from air on the safe side of the train while maintained under pressure in their closed position on the unsafe side of the train. This prevents the passengers frmn getting side of the car in case of emergency.

'The positions G and H of the valve are respectively for controlling the front and rear doors-3' and 5 so that in case of nor- 3 has closed. f

passages 17 and i I nected as before to the emergency valve line,

line 2? from the front door valve puller is connected through groove 61 to the emergency pressure ine, causing the door to open, line 33 is exhausting air from the rear door puller through the exhaust pipe 39,

causing the door to remain closed.

l/Vhen the valve is moved to position H, the reservoir line 8 remains blanked, line 15 is still connected to the emergency pressure valve line 22, as are lines 27 and 33, so that both the frontand rear doors are open.

Another feature of the valve is theimpossibility of unintentionally moving the handle to position H to open the rear door,

since the handle must be raised over the projection 51, requiring a conscious efiiort' on the part of the motorman. It is also necessary to raise the handle over the projection 53 before the handle can be returned to position A. This prevents the motorman from moving the handle to position A put- "desire to secure by I during an emergency application of "the ting all the doors on the reservoir pressure line 8.

Having thus described my invention,

- which is shown in the drawings by means of an illustrativeexample to which I do not desire to be limited, but rather by the spirit and scope of the appended claims, what 1 United States Letters Patent is: I r k 1.; Ina vehicle having entrance and exit ways, doors in said Ways, and means for opening said doors on one side of the vehicle brakes. v D

2. In a vehicle having entrance and exit ways, doors in said ways and valve con-. trolled means for opening said doors on one side of the vehicle during-an emergencyap plication of thebrakes.

3, In .a vehicle having entranceand'exit ways, doors in said ways and means for deenergizing the door openingmeans on one side of the-vehicle while maintaining the doors on the other side closed.

4 Ina vehiclehaving passageways, doors in said Ways and means for opening the front door or both the front and rear'idoors on one side of the car.

5. In a vehicle having passageways, doors in said ways, means for selectively controlling the operation of. the front and rear doors on one side of the car, and means for de-energizing said doors-on one side ofthe car durrng an emergency. v

6. In a vehicle having passageways, doors in said ways, means for selectively control ling the operation .ofthe front and rear doors on one side of thecar, and means for de-energizing said doors on one side of the car when the emergency brakes are applied. 7. In a vehicle having passageways,doors sources'and means for selectively supplying the door opening means from either source.

10. In a vehicle having entrance and exit ways, doors in said ways, means for opening said doors, including two fluid pressure sourcesand means for selectively supplying the door opening means from either source, including a valve.

11. In a vehicle having entrance and exit ways, doors in said ways,means for opera ing said doors, including-two fluid pressure sources and means for selectively supplying the door opening means from either source, including a valve normally set during the operation of the vehicle so that on an emergency application or the brakes, the doors on one side of the car are free to be opened-by hand,

12. In a vehicle having passageways,

doors in said ways, a plurality'of fluid pres sure sources, means foroperating all of said doors from one of said-sources, and means of the -car from another of said sources, when [the emergency brakes are applied.

13. In a vehicle having passageways,

doors insaid ways, a plurality of fluid presfor operating all ofsaid doors on the safe side sure sources, means for operating said doors on one side of the cardurmg normal ,operation, said means being normally set during of the vehicle when theernergency brakesare applied. y 15-. In, a vehicle havingpassageways,

doorsin said ways, a fluid pressure source and means operable from said source to automatically 'de-energizethe doors on one side of the vehicle in casebf an emergency.

'16. In a vehicle having, passageways, doors in said ways, means for operating said doors said means bein operable to open either'the front or the rent and rear doors on-thesafe side of the vehicle.

17. In a vehicle having'entrance and exit ways,;doors in said ways,.means for operating said doors so arranged as to prevent side of the 'vehicleclosed by fluid pressure.

the opening of the rear doors "on the safe side of the vehicle except on a conscious effort of the operator.

preclude, an unintentional. opening of the rear doors.

'1-9. In a vehicle having entrance and exit ways, doors in said ways, and means for selectively operating said doors, including a multip'osition valve so constructed as to preclude unintentionally returning the valve to its control position. 2

20. In a vehicle having entrance and exit .ways, doors in said ways, and means for selectively operating said doors, including a multi-position valve so constructed as to preclude operating said, valve in any but its normal operating position, except on a conscious effort to remove it from said normal operating position.

21. In a vehicle having entrance and exit ways,doors in said ways, a plurality. of fluid pressuresources, means for operating said doors from said sources, including a valve which maintains the doors on the unsafe from one source, and is so arranged as to cause the doors on the safe side of the vehicle to be free for opening by hand when the emergency brakes are applied.

22. In a vehicle having entrance and exit ways, doors in said ways,means for selec tively operating said doors including a four positlon'valve whichopens the front door.

on the safe side of the vehicle in one of its positions, and'both front and rear doors on said safe side in another position;

23. In a vehicle having entrance'an'd exit ways, doors in] said ways, means for -seleotively operating said doors including a four position valvearranged in one ofits posit-ions to permit all the doors on the safe side of the vehicle to be opened when the emergency brakes are applied.

24. In a vehicle having entrance and exit ways, doors in said ways, means for opening said doors, including a source of stand: 111g fluid pressure for maintaining the doors on the unsafe side of the vehicle closed and means for freeing the doors on the safe side of the vehicle operable by the emergency brake line fluid pressure. I

25. In a valve, a block, a valve head a stem having a handle thereon, means to prevent the unintentional movement of said handle from the normal operating posltion of the valve and means for preventing the removal of said handle,

in any but a predetermined position.

3' 26. In a vehicle, the combination with a plurality of doors including front and rear doors, fluid pressure actuated motors for the operating said doors, ,a valve for controlling the supply of fluid pressure to and the exhaust thereof from said motors, and means associatedwithsaid valve to permit selective actuation of said motors, and means for preventing any movement of the valve from one of it's positions except by a conscious effort.

2 7. In a vehicle having entrance and exit ways, doors 'in said ways, and means for operating said doors, said means including a valve which is normally set to permit the freeing of the doors on the safe side of the vehicle upon an emergency application of the brakes, and which may be controlled to open either the front or front and rear doors on the safe side of the vehicle. 28. In a vehicle, the combination with a plurality of doors including front and rear doors, fluid pressure actuated motors, for operating said doors, .and' a valve for controlling the supply of fluid pressure to and -means associated with said .valve to permit selective actuation of the motor of the front door or both the front and rear door.

30. In a vehicle, the combination with av plurality of doors including front and rear doors, fluidpressure actuated motors for operating said doors and a valveforcontrolling thesupply of fluid pressure to and the exhaust thereof from said motor and means associated with said valve to permit selective actuation of the motor of the front door or both the front and rear door, on one side'of the vehicle.

31. In a vehicle, the combination with doors on opposite" sides thereof, fluid pressure actuated motors for operating said doors, and valve for controlling the supply of fluid pressure to andthe exhaust thereof from said motor, a fluid pressure emergency brake system and means controlled by said valve for exhausting'the' fluid pressure from the motors orl one side of thevehicle' topermit the manual operation of said doors on that side when the emergency brakes are applied. 7

exhaust thereof from said motors and Will 32.,In. a vehicle, the combination with doors on opposite sides thereof, fluid pressure actuated motors for operating said doors, and valve for controlling the supply of fluid pressure to and the exhaust thereof from said motor, a fluid pressure emergency brake system and means controlled by said valve for exhausting the fluid pressure from .the' motors on the safe side of the vehicle.

33. In a vehicle, the combination with doors, a plurality of sources of fluid pressure for said motors of a single valve for controlling lioth of such supplies and means controlled by said valve for supplying fluid pressure to the door engines onone side of the vehicle formaintaining thedoors closed and means'for automatically exhausting the fluid pressure from the door engines on one side of the vehicle when the other source of fluid pressure is supplied to 'saidva'lve.

" 34. In a vehicle, the combination with doors on opposite sides of said vehicle. a brake system, powermeansnormally tending to maintain all of the doors of said vehi'cle closed and means actuated by actuation 10f the brake system for rendering inoperadoors on opposite sides ot said vehicle, a.

brake system, a plurality of fluid pressure sources,- means operated from one of said sources for maintaining the doors-on one side of the vehicle closed, and means operated from another of said sources rendered inoperative when the emergency brakes are set.

In testimony whereof I'have hereunto set my hand on this A. DJ, 1925.

PARIS R. FORMAN.

30th day of December, 

